Competitive Exams: Botany MCQs (Practice-Test 14 of 104)

Gaseous mixture used by Miller for synthesis of amino acids through heat and electric discharge included

Methane, ammonia, hydrogen and water vapours

Methane, ammonia, nitrogen and water vapours

Methane, nitrogen, hydrogen and water vapours

Ammonia, carbon dioxide, nitrogen and water vapours

Speciation occurs when

Gene flow within the common pool is interrupted by an isolating mechanism

Competition occurs between members of two populations for resources

Niches of two closely related individuals get over-lapped

Nutrients limit gene flow between individuals

Which one of the following tissue systems is responsible for the gritty texture of pear fruit?

Macrosciereids

Osteosclereids

Brachysciereids

Asteroscelereids

Primary phloem, secondary phloem, internal phloem and included phloem, occur in the stem of

Salvadora

Leptadenia

Aristolochia

Nyctanthes

The cytoplasm bridges that interconnect plant cells and selectively traffic macromolecules from one cell to another are known as

Microtubules

Middle lamella

Plasmodesmata

Phragmoplast

Growth in length of intimates occurs by the activity of

Lateral meristem

Procambium

Intercalary meristem

Apical meristem

According to the rule of nomenclature, the name of a species is expressed by two words. The plants name Veronica anagallis aquatica consists of three words. Which one of the following expresses the name correctly in two words?

Veronica anagallis-aquatica

Veronica anagallis and aquatica

Veronica (anagallis aquatica)

Veronica anagallisaquatica

If Sisymbrium murale is transferred to the geneus Diplotaxis with the new binomial combination. Diplotaxis muralis (Linn.) DC, then Sisymbrium murale Linn. Will be known as

Homonym

Tautonym

Basionym

Autonym

Which one of the following is the most important criterion used to classify living organisms into three primary kingdoms, namely-Archaea, Eubacteria and Eukarya?

Genetic relatedness

Morphological characters

Physiological characters

Phenotypic characters

The principles of which of the following taxonomic methods are also known as neo-Adansonian Principles?

Taxometrics

Cladistics

Phenetics

Phyletics

Select the correct answer using the codes given below:

1 and 2

1 and 3

2 and 3

4 only

Centrospermae is regarded a natural order of angiosperms. All except two of its families contain the pigments that are collectively called battalions. Some of the families of the order are enumerated below. Which two families lack betalains?

Amaranthaceae

Aizoaceae

Chenopodiaceae

Caryophyllaceae

Mouginaceae

Select the correct answer using the codes given below:

1 and 2

2 and 3

3 and 4

4 and 5

Match list I with List II and select the correct answer:

List-I

List-II

Gel electrophoreses

Serology

DNA-DNA hybridization

Restriction site analysis

Annealing

Isozymes

Southern blots

Antiserum

Sequencing

A

B

C

D

5

2

1

4

2

1

3

4

2

4

1

3

3

4

2

5

Proteinaceous infectious particles without nucleation acids are known as

Viroids

Virusoids

Prions

Virions

Match List I (Name of genera) with List II (Name of classes) and select the correct answer:

List-I

List-II

Saprolegnia

Claviceps

Agaricus

Fusarium

Deuteromycetes

Oomycetes

Ascomycetes

Basidiomycetes

A

B

C

D

2

1

3

4

2

3

4

1

3

4

2

1

1

3

4

2

A structure is lichens that is similar to stomata in function is known as